10861990 has 8 divisors (see below), whose sum is σ = 19551600. Its totient is φ = 4344792.

The previous prime is 10861969. The next prime is 10861993. The reversal of 10861990 is 9916801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10861993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 543090 + ... + 543109.

It is an arithmetic number, because the mean of its divisors is an integer number (2443950).

Almost surely, 2^10861990 is an apocalyptic number.

10861990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10861990 is a deficient number, since it is larger than the sum of its proper divisors (8689610).

10861990 is a wasteful number, since it uses less digits than its factorization.

10861990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086206.

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 10861990 is about 3295.7533281482. The cubic root of 10861990 is about 221.4639965125.

The spelling of 10861990 in words is "ten million, eight hundred sixty-one thousand, nine hundred ninety".